Telegraphone.



F. SGHAEFER.

TELEGRAPHONB. APPLIGATION FILED uns, 1908.

Patented Sept. 21, 1.909.

5 SHEETS-SHEET 1.

Annnsw. s. Gamm co. ramo-uwoamvnsas. wumemn. u c.

F. SGHAEFER.

TELEGRAPHONE.

APPLICATION FILED APR. a, 190s.

Patented Sept. 2l, 1909.

5 SHEETS-SHEET 2.

WM uw maw. s. GRAHAM co., rHoTc-LUMOGRAPHERS. wAswmGToN, D. c.

F. SCHAEER.

TELBGRAPHONE.

APPLICATION FILED APB.. 8 190B- 934,843. Patented Sept. 21, 1909.

5 SHEETS-SHEET 3.

me J SWW@ F. SGHABFER.

TBLEGRAPHGNE.

APPLICATION FILED APR. s. 1908.

5 SHEETS-SHEET 4.

Patented s611921, 1909.

iff/weones :J/ QM ANDREW. av Gamm co. umn-Llwoempnsns. wAsmNGTaN. n. c.

F. SGHAEFER.

, TELEGRAPHONE.

'APPLICATION FILED APR. a. 1908.

` Patented Sept. 21, 1909.

5 SHEETS-SHEET 5.

lru l l QZ; ma Sito/awa i! i.- A

Clt

UNITED STATES PATENT OFFICE.

FREDERIC SGHAEFER, OF WHEELING, WEST VIRGINIA, ASSIGNOR TO AIVIERICANTELEGRAPHONE COMPANY, A CORPORATION OF THE DISTRICT OF COLUIVIBIA.

TELEGRAPHONE.

To all woo-m it may concern:

Be it known that l, Eiznonnic Soiiaiirnn, a citizen ot the if'uitedStates, residing' at Wheeling in the county of Ohio and State ot' llleitVirginia, have invented certain new and use't'ul linprovenieuts inTelegrai'ihones, ot which the followingis a full, clear, and exactdescription.

My invention relates to telegraphones and has ior its obj ect theprovision of a niachine in which the record inediuni is in the forin ot'a disk rotatively supported and is par ticularly adapted tor connnercialwork of various kinds such as the dictation and transcribing ot'letters, etc.

My invention comprises various improveinents in the ineans torsupporting` and rotating' the disk, ineans for supporting and inovingthe magnets with respect to the disk, ineans for connecting anddisconnecting the drivingi ineans with the disk support and with feedscrew by which the carriage is inoved, and various details ot'construction as will he tully sety forth and claimed.

In order that the invention niay be inore fully understood, reference ishereby inade to the accompanying drawing, oi which- Eigure 1 a plan viewol the improved telegraphoue. 191g, 2 is a front elevation ot the saine,the supporting` cabinet being shown in section. Eig. 3 is an endelevation ot' the saine, also showing the cabinet in section. Eig. el isa plan view ot the body or bed plate with certain of the operatingparts, the carriage being' removed theret'ron'i. Fig. 5 a plan view othe traveling carriage upon which the Aiagnets are supported. Eig'. o isa section on lino 6 6 ot' Fig. 5. Fig'. 7 is a central vertical sectionof the means 'for rotatively supporting the record disk. S is a planview ot the table to which the said disk is applied and showing theinovable spring,l arinsfor clamping the disk upon the said table, saidarins being shown in their extended or clamping` position. Fig. 9 is aplan view ot' the saine with the arnis retracted so as to perni it adisk to be applied to or i'einoved troni the said table. Fig. 10 is abottoni plan view ot the knob used .tor securing the said spring arinsin position. and the gear for operating said arins. Figi'. 11 a planview ot the support secured to the traveling carriage and Carrying themagnets which operate uponv the upper surface of the record disk. Eig.12

Specification of Letters Patent.

Application filed April 8, 1908.

Patented Sept. 2t, 1909.

Serial No. 425.825.

is a side elevation ot' said support and also ot the correspondingsupport. tor the inagncts which operate upon the lower surface ot thedisk. Fig. 113 is an end elevation of the lower magnets and support ofFig. 1;). Eig. 14@ is a detail plan view ot the block to which themagnets are applied. Fig. 15 is a detail section oit said block, showingthe magnets applied thereto and the traine in which said block issupported, the bottoin plate being oinitted. Figs. 16 and 17 are a sideelevation and bottoni plan view, respectively, of a i'nodii'iedconstruction in which the inagnet block is provided with feet orsupports which rest upon the record disk to minimize the wear upon thepole pieces of the magnet, and with wiping pads to reinove dustfrom thedisk. Fig. 1S is an enlarged sectional detail of the lower end ot thepole piece with the jewel or supporting toot applied thereto and ot'special construction.

In all the views corresponding parts are designated by the sainereference numerals.

ln the structure illustrated 1 is a cabinet, preferably of wood, withinwhich is situated the inotor 2 for driving the inachine or instrumentand the set of batteries 3 for turnishingl current for the magnets whichare carried by the traveling carriage. The bed plate ,Je rests upon saidcabinet and supports the various operating parts, with the eX- ceptionof the inotor 2 and its governor 5. This inotor niay be ot any desiredtype, but I prefer to use an electric inotor driven from any suitablesource of current. the gov ernor 5 being mounted directly upon thearniature shaft or' the inc-tor and comprising the. series otlcentrifuoal weights G ysecured to the central portions ot' the. springsT, the latter being` secured at one end to a collar 8 tixed on theniotor shaft and secured at their opposite ends to a sleeve 9 slidableupon said shaft and lrovided with a friction disk 1t). There is also asleeve 11 torined with an integral arin 12 which carries at itsextremity a pad 13 ot' felt or other suitable material situated in suchposition as to be friction ally engaged by the disk 10 in order toregulate the speed of the inotor shaft. The sleeve 11 is slidable upon apin 14 sei-,ured to the traine, of the inotor 2 and surrounded by a coilspring 15 which bears at ends against said inotor traine and saidsleeve. re-

spectively, and presses the latter againstr the end of an adjustingscrew 16 threaded in the bed plate 4 and provided with a circularnotched head 17 for convenience in turir ing. lVhen the screw 16 isturned so as to move the same downwardly, it will cause the sleeve 11,arm 12, and pad 13 to move downward and thereby permit of increase inthe speed of the motor shaft, and conversely an upward movement of thescrew 16 will cause the motor to rotate at a lower speed. The uppersurface 1S of the sleeve 11 is of suliicient extent to provide anabutment for the end of the screw 16 in any position of lateraladjustment of the motor 2 for the purpose of tightening the driving belt19 which passes over the drive pulley 20 mounted on the motor shaft, andthe pulley 21 which is mounted upon a bearing concentric with thevertical spindle 22 and which will be described later. The lateraladjustment referred to is obtained by supporting the motor 2 by means ofscrews 23 (see Figs. 2 and 3), said screws being threaded in the upright24 which is bolted to the bottom of the cabinet 1, the washers 25 uponsaid screws engaging the flanges 26 which are in` tegral with the motorframe and are provided with notches 27 through which the said screws 23pass. In previous construe` tions, the motor has been mounted with itsshaft horizontal or at right angles to the spindle carrying the disk.This necessitates a turn in the driving belt and a special belttightener and other complications which the present arrangement avoids.

The means for supporting and rotating the record disk comprise thevertical spindle which is supported on a ball bearing of which the cup2S is secured to said spindle, and the cone 29 is carried by the bedplate 4 and which also carries the cup 30 of a second ball bearing whosecooperating part 31 is carried by the pulley 21. Secured within the boreof this pulley is another bearing cup 32 which cooperates with the conesecured to the spindle 22 to form a ball bearing, and the last mentionedbearing serves, not only to support the pulley 21 upon the spindle 22,but to support the spindle itself with respect to the bed plate 4, theadjustment of the cone serving to take up wear in each of the three ballbearings. Thus three sets of balls are made to furnish the bearings fortwo rotating elements, the sindle and the pulley, which ordinarily wouldrequire four. Locking nuts 34 are provided for securing the cone 33 inposition.

The rim of the bearing cup is formed with a series of teeth which areadapted to be engaged by the teeth of a movable clutch member 36. saidclutch member being slidable upon the spindle 22 and keyed thereto by afeather 37. A groove 33 is formed in said clutch member to receive thepins 39 which project inward from the arms of the operating yoke lever40, said lever being pivoted at 41 to a lug or ear carried by the arm 42which is secured to and depends from the bed plate 4. The lever 4()carries at its end a pin 43 which engages a slot 44 formed.

in the end of the link The other end of this link is pivoted at 46 tothe end of one arm of the T-shaped lever 47 which is pivoted on a screw4S threaded on the arm 42. There is another lever 49 pivoted on thescrew 50 also threaded in the arm 42, and said lever is provided with aslot 51 which receives a pin 52 carried at the end of one of the arms ofthe lever 47. The levers 47 and 49 are connected by a tension spring 53the ends of which are secured, respectively, to the pins 54 and 55,whereby the said spring tends to draw said pins together and to rotatesaid levers 47 and 49 about their axes in either direction after saidpins 54 and pass the line connecting the axes of said levers. riihere isa stop for limiting the movement of said levers in one direction, in theform of a screw 56 threaded in a lug 57 integral with the arm 42 andheld by a jamnut 58, said screw abutting against a lug 59 integral withthe lever 49. The movement of the levers 47 and 49 into the opposite 'position or the position in which the spring 53 is on the other side ofthe line connecting the axes of said levers from that which it occupiesin Fig. 2, is effected in a manner hereinafter described, to cause theengagement of the lower face of the clutch member 36`with a frictiondisk or ring 60 rigid with the extremity of the arm 42 and which acts asa brake upon said clutch member and therefore upon the spindle 22 whenengaged by said clutch member.

The upper end of the vertical spindle 22 is provided with a table 61which is secured thereto by a pin 62 and is provided with a shoulder 63the diameter of which is equal to the diameter of the central openingformed in the record disk 64 of suitable material for receiving atelegraphone record, hard steel being preferably used. There is avertical pin 65 projecting from the table 61 and adapted to engage anotch or hole formed in the said disk in order to transmit the drivingtorque thereto. Means are provided for pressing or clamping the diskupon the table 61, consisting of a plurality of spring arms 66 pivotedat one endY upon pins 67 rigid with the table 61, said arms resting uponwashers 68 which surround said pins. Each of the arms 66 is providedwith a segmental rack 69, the teeth of which mesh with a spur gear 7 Osecured to a knob 71 which is journaled on the upper end of the spindle22 and secured against removal by the jam-nuts 72. The ends of thespring arms 66 are depressed, as shown, and, when the said arms are inthe position shown in Fig. S, their extremities press downward upon thesurface of the disk 61, thereby clamping the same upon the table 61, themovement of said arms being limited by the pin (35. 1t is evident that arotary movement of the knob 71 and gear 70 causes the spring arms 60 tobe retracted into the position shown in Fig. 9, the space between thelower surface of the knob 71 and the upper surface of theI table 61being sufficient to allow the spring arms to be housed therein. Thisretraction of the spring arms permits the disk G4 to be removed from thetable o1 since the internal diameter of the central opening is slightlygreater than the greatest diameter of the knob 71, so that all that isnecessary, in order to remove the disk (5f-1 from the table ('31, is torotate the knob 71 through a small angle in order to retract the springarms 66, and the disk may then be removed from its support and a newdisk applied thereto and secured by turning the knob 71 in a reversedirection so as to extend the spring arms GG into clamping position.

Upon the upper portion of the spindle and below the table (S1 is ixed aworm 73 which engages a worm gear 7st carried by a sleeve 75 looselymounted on a horizontal shaft 76 which is formed with a feed screw 77.This shaft is mounted on centers 78 carried by the brackets 7 9 securedto the upper surface of the bed plate i. The sleeve 75 is provided withteeth S0 adapted to engage similar teeth formed on the clutch member 81which is slidable upon the shaft 77 and adapted to drive the samethrough a spline S2.

The clutch member S1 is formed with a pair of collars 83 between whichextends a pin S4; which extends upward from the end of a lever S5secured to the upper end of a rock shaft- SG, and to the lower end ofsaid shaft is secured a lever arm 87 which is pivoted at 88 to the endof an operating` rod S9 w lich may be controlled in any desired manner,but which is shown as being pneumatically operated, being connected tothe piston of an air cylinder 90 and adapted to be operated by an airbulb 91 in oney direction, and by a spring in the cylinder in the otherdirection. There is another arm 92 secured to the rock shaft S6 in suchposition to engage` the end of a spring which carries an electricalcontact 91 adapted to engage a similar contact carried by a spring 90,said springs being electrically connected to wires 97 and 9S, whichwires form a part of the circuit of wires used in carrying the voicecurrents to the recording magnets and, in reproducing, carry the voicecurrents which are generated in said magnets so that an angular movementof the rock shaft 86 caused by the operating rod 89 simultaneously movesthe clutch member S1, thereby releasing the shaft 70 from drivingrelation with the sleeve 75 and opening' the circuit which includes therecording or reproducing magnets. These magnets are carried by atraveling carriage 99 which is preferably in the form of a hollowrectangle, as shown in Fig. 5, one end of which is formed with anintegral arm 100 extending upward from the plane of the body of saidcarriage and inward toward the center thereof, the disk, when mounted,standing between the arm and the main portion of the frame. Thiscarriage is formed with front and rea-r longitudinal ways 101 and 102,respectively. 1l pon the bed plate l is formed a way 103 extendingparallel to 101 and, at the rear of the bed plate, is a strip 10st whichis formed with a. way 105, said strip being adjustable toward thecarriage by means of adjusting screws 100 provided with jam-nuts 107,said screws being threaded in lugs 108 projecting upward from the bedplate 4E, said strip 101 being held against longitudinal movement bynotches 109 formed in the lower surface thereof and engaging ribs 110formed on the bed plate. Between the ways 101 and 10b are two steelballs 111, and between the ways 102 and 105 is a single ball 112, whichballs receive the weightof the carriage 99 and allow the same to travellongitudinally with respect to the bed plate with a minimum amount offriction. rfhe adjustment of the strip 10st provides for the eliminationof any looseness between the ways and the roller supports, and the useof three balls insures even support of the carriage at all times.r1`here is a lug 111 extending inward from the rear of the carriage 99,and secured thereto by screws 112 is a block 113 having a bearing 111,and there is another bearing 115 formed at the end of the carriage 99,and within said bearings journaled a horizontal rock shaft 11G upon theouter end of which is fixed an arm 117 having an enlarged end 11Sadapted to be pressed by the thumb or finger of the operator, thedownward movement of the same being limited by an ear 119 formed as anintegral extension of one corner of the carriage 99, said ear alsoacting as a handle by which to move the carriage by hand. lpon the innerend of the shaft 110 is a securing nut 120, and adjacent the bearing 114is an arm 121 which is rigid with said rod 110. rEhe forward end of saidarm is provided with a segmental nut 122 which is held in engagementwith the thread of the feed screw 77 by a tension spring 12B one end ofwhich (see Fig. is secured to the carriage 99, and the other end ofwhich is secured to the ear 124 formed integral with the arm 121. 1t isevident that, upon depressing the end 11S of the lever 117, the

feed nut will be moved out of engagement with the feed screw, and thecarriage 99 can then be moved by hand either to the right or leftthroughout its full range of movement, and, upon releasing the arm 117,the spring 123 will cause the arm 121 to be restored to its initialposition with the feed nut in engagement with the feed screw.

The forward edge of the carriage 99 is provided with graduations forminga scale 125, and there is an index or pointer 126 secured to the bedplate 4 in proper position to coperate with the graduations of saidscale in order to indicate the position of the magnets with respect tothe record surface. Vhen the carriage is at its extreme left-handposition the pointer 126 will be opposite the first mark on the scale125 (see Fig. 1) and the magnet below the disk will be at its extremeedge and in proper position for starting to record upon the disk, themagnet above the disk being near the center thereof and also in properposition for starting to record. 1t should be noted that the disk, theoutline of which is shown in dotted lines in Fig. 1, is of sufficientsize to cover almost the entire extent of the carriage 99 and that thescale which is carried by the said carriage is, for the most part, belowthe said disk, but, as the carriage travels toward the right in making arecord, the scale moves with it, and the portion which is opposite thepointer 126 will always be visible so that a reading may be taken at anytime.

There are two recording` magnets 127 and 128, respectively, andassociated with each is an obliterating magnet 129 and 130,respectively, one setof magnets being situated above the disk 64 so asto operate upon the upper surface thereof, and the other set beinglocated below the said disk so as to operate upon the lower surfacethereof. The advantage of using two magnets for recording or reproducingin connection with a record in the form of a rotary disk is that thedisk may be caused to rotate at a uniform speed and, by causing one ofthe magnets to move from a faster moving part to a slower moving part ofthe disk and the other magnet from a slower to a faster moving part, thesum total of the magnetic effects produced by the magnets or theelectrical effects produced in their circuits by the magnetism of thedisk is constant, because, as the speed of the record surface upon whichone of the magnets is operating diminishes, the speed of the surfaceupon which the other magnet is operating increases at the same rate, sothat the sum of the effects of the two magnets is always the same, andgreater than the effect of either magnet acting alone at any time.

1t has been proposed heretofore in Patent No. 893,277, granted July 14,1908 to Harve R.

Stuart, to obtain this advantage by mounting the two magnets uponseparate carriages traveling simultaneously in opposite directions, but1 have found that the same advantage can be obtained by supporting bothmagnets upon a single carriage in such positions that one of the magnetsstarts at t-he edge of the disk and travels toward its center and theother magnet starts from a point near the center and travels toward theedge of the disk along a radius which is removed 180 degrees from theradius along which the first magnet moves, so that I am enabled toobtain exactly the same effect as would be obtained by the use of twocarriages traveling in opposite directions simultaneously, with themagnets moving along the same radial line, but with only a singlecarriage.

The construction of magnets is as follows: There is a supporting frame131, preferably of hard rubber', within which is set a block 132 of thesame material. Tightly fitted within the latter is a pair of spoolcentersv 133 upon which are placed the spools or coils 134. The spoolcenters 133 are drilled to receive the magnet cores 135 and 136. Thesecores are of wrought iron, and there is a spring plate 137 which issecured at its center to a supporting plate 138 and presses at c itsends against the upper ends of the cores 135 and 136, the opposite endsor pole pieces of the cores being adapted to contact with the recorddisk. The supporting plate 138 is provided with a pair of curved slots139 through which pass the screws 140 for securing said plate to theblock 132. Said connection provides a slight angular adjustment of thesaid block with respect to said plate around the centers thereof,whereby the pole pieces may be set exactly the same distance from theaxis of the record disk, whereby they will trace the same path upon thesurface. The plate 138 is provided with a pair of downwardly extendingears 141, and the lower extremities thereof are pivotally connected tothe frame 142 by means of adjustable centering screws 143. These screwsprovide an adjustment by which the distance of the pole piece supportingblock 132 from the axis of the record disk can be slightly varied,whereby the path traced by one recording magnet can be accuratelydetermined or may be caused not to register with the path traced by theother recording magnet, if desired. The frame 142 is pivoted upon a pairof oppositely disposed centering screws 144 threaded in the frame 145,and the latter is rigidly secured to the arm 100 of the travelingcarriage 99 byV screws 146. There is a tension spring 147 secured at oneend to the frame 145 by a screw 148 and, at the other end, to an arm 149which is integral with the frame 142. This spring therefore tends toturn the frame 142 on its pivot,

thereby pressing the pole pieces of the map*- nets against the surtaceot'the record diskj the said spring` allowii o' the trame 142 to move upand down in order to accommodate itseli2 to any irregularity which mightbe present in the shape ot the disk. Eis the ccnter ot gravity ot themagnets and their supportinf l black above the centering' screws la??rri provide a link 15( one end oi'' which phiotally secured at 151 to oneoi the cars 1li. and the other end is formed with an opening ot somewhatgreater diameter' than the piu or screw 15 which passes through idopening' and is rigid with the trame 11:5. rthis link tlieretorcprevents the magnet trom turning over when it raised troni the disk.

The magnets which operate upon the lower surface ot the record disk areexactly similar to the upper magnets, and the supporting means thereforis exactly the same, except that the link 150 is omitted since thecenter ot gravity ot the lower magnet is below its centering` screws.

The lower magnet and its support is clearly shown in Figs. 12 and 137which views also illustrate a screw 154 which is threaded in the frame1&5 and serves as a stop for limiting the pivotal movement of the tramelet-2 by engagement oli an extension thereof, as shown. By removingscrew the magnet can be swung upward sufiiciently to turn it upside downto facilitate the renewal ot the magnet cores. The trame 1l?) whichai-ries the lower magnet is secured to the carriage 99 by screws 155(sce Fig. 1). The block 132 which carries the magnets (sce Fig. let) isprovided with horizontal channels 15G. and the wires 15T which areelectricallyY connected to the windings ot' the magnet coils occupy saidchannels. Said wires are tlexible and their outer ends are provided withlugs 15S which are secured to the binding` posts 159 carried by aninsulatinpl block 16() secured to the frame 145. This arrangement oitthe wires 158 allows `greater tlexiliiility in the pivotal movement otthe magnet support 132 about the centering screws 14.2% than any otherarrangement which 1 have been able to devise. From the bindingl postsot' the upper frame 145, the conducting' wires lead along;l the hollowunderside ot the arm 10() ot the ciu-riapre and thence alongl a groove1205 (Fig. tl) in the trout member ot the carriage and `finally join thewires trom the lower trame 145 to torni a cable 206 (Fig. llhis cable'passes through a slot 20T at'ter which the individual wires lead to thebatteryr` telcphonic ii'istruments and switches. The slot 20T permitsthe cable to move freely with the carriage without derangement.

ln 1G and 1T, a modification in the construction ot the magnet trame isshown.

t each end of the trame, pockets 200 are formed in which are placedwiping pads 201 adapted to rest upon the surface of the record disk andto clean said surface of any dust or foreign matter that .may bethereon. These pads may be pressed toward the disk by springs placedabove them in the pockets, or any suitable adjusting,` deviccs may beused to hold them in etlective workin;l )osition. These figures alsoillustrate support4 ing feet 202 in the torni ot jewels which are set insuitable sockets in the bottom plate oli the magnet trame. These jewelsare iixed at such a level that they will receive the larger part of thewear due to the pressure of the magnet trame against the disk, and atthe same time permit the pole pieces ot the mag'- nets to make adequatecontact with the disk withoutunduly .vearing them. These jewels may belocated at any suitable points on the frame to evenly support it.

1n Fig. 18, the jewel is shown in the t'oim ot a collar surrounding' thepole piece, the view being enlarged to show the :toi-mation otl thejewel in which a cavity or annular space is attorded immediately aroundthe extremity of the pole piece. This cavity, indicated by 203, formedin the jewel 204e, receives any dust or 'foreign matter that may getbetween the surface ot the pole and the disk. and become scraped olfinto the cavity. It the jewel did notl have this cavity, but hanged thepole closely, there would be less escape tor foreign particles. with theresult that they would be retained under the pole piece and interferewith the proper magnetic action.

A small plate 161 is provided (see Figs. 1 and 2) which is formed with aslot 162 and a depending arm which carries a roller 163. This plate issecured to the carriage 9i) by the screws itil which permit alongitudinal adjustment ot the said plate. T he roller 14.33 is sosituated as to strike the arm 163 formed on the pivoted plate 1l),during` the forward movement ot the carriage. and to strike againstthearm 166 during` the return cf the carriage in order to restore the plate49 to its initial position. The latter arm extends rearward t'rom thebody ot' the plate 4,9 so as to be situated below the longitudinalflange or rib 16T (F 3) which depends from the arriage 9). This ribprevents the pivotal movement ol the plate el) except when the carriageis in such position that the arm 166 is below that portion ot thecarriage where the said rib 16T is cut away. as .shown at 16H in lig. 2.'Therefore the plate Si cannot be moved to throw the clutch member 36until the carriage is near its cxtreme righthand position. T he movementot' the carriage to the right is limited by the engagement of the crossmember 169, of the carriage, with the head oi the casting` which securedto the bed plate by said screws in direction. Said frame therefore ridesupon surrotmds the spindle 22 (see Fig. 7), and t the movement of thecarriage in the opposite direction is limited by the engagement of theend ofthe carriage with a lug 170 formed integral with the bed plate e.

The carriage travels a sucient distance to the right (Fig. 1) to enablethe upper magnets to pass beyond the surface of the record disk 6% and,in order to support the magnets and prevent the pivotal frame 142 frombeing depressed by the spring 14:7 when in this position, means areprovided for sup-. porting the said magnets in this position, whichmeans, as shown, consist of a roller 171 (Figs. 2 and 3) mounted on theupper end of a rod 172, said rod being clamped to the bed plate 4 by apair of nuts 17 3 and 174 threaded upon said rod. Obviously, the rod 172may be adjusted longitudinally and any desired position of adjustment.The roller 171 is so situated as to engage the lower surface of theframe 142 (see Figs. 8 and 12) as the carriage is fed in a forward theroller and the magnets are thereby prevented from dropping below thelevel of the disk. This construction therefore provides a support forthe magnets when in this position and allows the disk to be removed fromits support and be readily replaced by another disk, after which thecarriage may be moved to its extreme left-hand position, which is theposition which it occupies at the beginning of a record.

1n order to afford an audible signal when the magnets are approachingthe end of the record, a bell 175 is provided, the same being secured tothe bed plate L1- and there is a hammer 17 6 which is pivoted at 177. Atension spring 17 8 is connected at one end to the base 179 of the belland, at the other end, to the hammer 176, and the operating lever 180 isalso pivoted upon the pin 177 and its forward end extends into the pathof the projection 181 which is integral with the carriage 99 so that amovement of the carriage toward the right causes the long arm of thelever 180 to be moved toward the right and the short arm toward theleft, which causes the pin 182 to press against the hammer 176 and turnit on its pivot, thereby raising the spring 178 under tension and, assoon as the projection 181 passes the lever 180, the spring 17 8 thrusts-the hammer against the bell and sounds the same. Upon the return of thecarriage the projection 181 moves the long arm of the lever 180 towardthe left but does not alter the position of the hammer 17 6 and, as soonas the projection 181 clears the lever 180, the spring 183, whichconnects the lever 180 with the hammer 176, restores the lever to itsnormal po sition.

The operation of the instrument is briey as follows The record disk is;appiedeto the rotary table 61 and the traveling carriage is brought tothe position shown in Eig. 1, this being the eXtreme left-hand positionof the said carriage. 1n this position the lower magnets are immediatelybelow the outer edge of the disk and the upper magnets are as close tothe center of the disk as will be effective. The motor 2 having beenstarted, movement is imparted to the driving belt 19 and pulley 21,which, by its rotation, drives the clutch member 86 and, through it, thevertical spindle 22, table 61, and the record disk 64;. The worm 7 3imparts rotation to the gear 7e and sleeve 75, and the latter, throughthe clutch member 81, rotates the feed-screw 77 and thereby imparts aprogressive movement at uniform speed to the carriage 99. 1f thereforeat this time voice currents be applied to the magnets, a magnetic recordin the form of a spiral of decreasing diameter will be made by the lowerrecording magnet, and a separate record in the form of a spiral ofincreasing diameter will be' made by the upper recording magnet, saidmagnetic records being similar to each other but consisting of magneticimpressions ditferently spaced on account of the record surface operatedupon by the two magnets, traveling at difl'erent speeds. These effects,however, can be added together when the records are reproduced, byconnecting the reproducing magnets either in multiple or in series witheach other or by connecting them in separate circuits connected withseparate receivers, one of which may be applied to each ear of thelistener. 1f at any time the person using' the instrument wishes to stopthe feed of the carriage 99, as when he is pausing to collect histhoughts or prepare for further dictation, all that is necessary to dois to press the bulb 91, thereby operating the rod 89 and arms 87, 92,and 85, and thereby throwing the clutch member 81 out of engagement withthe driving sleeve 80, thereby stopping the rotation of the feed screw77 and simultane-V ously opening the circuits which include the magnetsof the machine. Upon releasing the bulb 91 the clutch 81 will berestored to its former position by the spring in the air lcauses theupper magnet to be raised from the surface of the disk by reason of theeneerste gagement ot the traine li/lQ with the roller 171. During theperiod when the upper i magnet is raised, however, the lower magnet isstill in operative relation with the sur- S tace of the disk and may beused tor recording the finishing Words ot a sentence, although therecord produced Will he fainter than that which is produced as theresultant of the tWo magnets. Finally, the roller 163, which is in thepath ot' the arm 165 of the pivotal plate e9, presses against the sameand moves the latter to a sutticient extent to enable the spring 53 tothroiv the plate 49 in such a Way as to throiv the lever Ll to move theclutch member 36 out ot engagement With the driving` pulley 21 and applythe same to the friction brake n0. rfhis removes the driving iovver fromthe vertical spindle practically simultaneously brakes the saine, andbrings the said spindle to rest almost instantly, the motor 2 continuingto revolve and the pulley 21 rotating as an idler. rl`he record disk andsupporting table being noiv at rest, the disk may be removed andreplaced hy another disk;

The lever l 11T is then depressed by pressing ivith the linger or thumbupon its extension 118, whereby the feed nut 122 is moved out otcarriage may then be moved very readily to its initial or extremelett-hand position, which nmvement, by reason ol'V the engages ment otthe roller i615 vvith the arm Vii/3G ot the pivotal plate #l-Q, restoresthe latter to its initial position, as shovvn in Fig. 2, and therebyoperates the link and lever d() and moves the clutch member 3o fromengagement With the braking ring 6U and into engagement with the clutchmember ot' the drive pulley i1 so that the instrument is in position torstarting a neiv record.

The operation ot reproducing is carried on in a manner similar to thatot' recording,

the only,Y ditlierence boing in the ivell knoivn change ot connection bvwhich the magnets used tor recording are converted into regroducingmagnets and the obliterating magnets l ung cut out ot circuit so as notto ctl'ace the record.

llt will be seen that in this machine. the disk ma)Y continue to runduring the time that it is in use. and tl at it is stopped only toremove and replace it. During the operations ot recording` andreproducing, in the intervals vvhen speech is not delivered, or when therecord is not listened to, the radial feeding movement ol' the magnetsis the only movement that stopped. ln this way, the normal speed oitithe disk is in stantly available the moment the leed ot the magnets isrenewed. and etiective recording and reproduction is assured over theentire availaljile surface ot the disk. ln machines Where either themotor or the disk, or both. are stopped and started at intervals duringthe recording or regroducing oiiierations, time is consumed in gettingup to normal and it the dictation is commenced v i normal speed isreached, the record ivi be Weak or undiscernihle.

fhat i claim, is:-

l. in a telegraphone or similar machine, the combination ot a recordmedium support, a recording or reproducing device, feeding mechanism lorthe latter, a motor driving means operated therebyv to drive the recordmedium support and iteeding mechanism, and a clutch tor connecting anddisconnecting the feeding mechanism to and trom the motor vvithoutali'ecting the driving means tor the. record medium support.

2. ln a telegraphone or similar machine, the combination ot' a recordmedium, a recording or reproducing device in engagement with thesuit'ace thereof, a carriage in which said device .is mounted, a teerA1mechanism tor said carriage and means tor connecting and disconnectingthe carriage to and trom the i'ced mechanism Without displacing therecording or reproducinfg` device.

il. lin a telegraphone or similar machine, the combination ol a rotarysupport lior sustaining a disk record, a carriage having a engagementwith the feed screiv TT, and the A recording or reproducing device andmovable. transversely with respect to the disk, and a scale carried bysaid carriage in such posh tion that the greater portion thereot registers vvith the disk during a part ot the travel ot the farriage.

l. ln a telegraphone or similar machine, the combination ot a recordingmedium in the form of a disk, means tor rotating said disk and means torautomatically stopping the disk when its surface has been entirelytraversed b v the recording or re noducing device, said stopping meansbeing reset by the return ot said recording or reproducing device.

o. ln a telegraphone or similar machine, the combination ot a recordmedium, a recording or reproducing device adapted to act thereon, a seretor feeding said device across the record niediiun and means .torstopping and starting the 'feeding screw Without ati'ecting the rotationotA the disk.

l. in a te1x graphono, a screiv shat't adapted to tecd the magnet arrossthe t; :e ot tho record medium, a motor adapted to drive said shaft, aclutch tor connecting and disconnecting the shatt ivith the motor. anelectric sivitch controlling the circuit ot the magnet, and means torsimultaneously operating the clutch and throwing said switch,substantially as described.

T. ln a talking machine, the combination ot a rotating record medium. arecording and reproducing device cooperating therewith, means r lfeediij the latter across the eurace ot the torn r. and means tor stopixiingand starting the feeding means independent of the record medium, andwithout removing the recording or reproducing device from operativeposition with respect to the record medium.

8. ln a talking machine, the combination of a record medium in the formof a disk, a recording or reproducing magnet arranged to cooperate withone surface of the disk and a similar maO'net arranged to cooperate withthe other surface of the disk at a point not directly opposite the firstmagnet, a single carriage in which both magnets are mounted, and meansfor feeding said carriage so as to cause the magnets to move at equalspeed across the respective surfaces of the disk.

9. In a talking' machine, the combination of a recording medium in theform of a disk, a carriage having' one portion extending along one faceof the disk and another portion extending along the opposite face of thedisk, a recording or reproducing device cr `ried by each portion of thecarriage and not in line with each other in a direction perpendicular tothe disk, and means for feeding the carriage, substantially asdescribed.

lO. ln a talking' machine, the combination of a recording medium in theform of a disk, a recording or reproducing device located upon one faceof the disk near its outer edge, a second recording or reproducingdevice located upon the opposite face of the disk near but on theopposite side of its center, a single carriage for supporting bothrecording or reproducing devices and means for feeding said carriage.

l1. In a talking machine, a record medium in the form of a disk, atraveling' carriage and a recording or reproducing device located uponeach face of the disk and carried by said carriage in such positionsthat only one of the same is movable out of range of the disk to permitthe removal of the latter from its supporting spindle.

l2. In a talking nnichine,` the combination of a record medium in theform of a disk, a carriage carrying a recording' or reproducing device,means for normally forcing said device toward the surface of the disk,and a support for the recording or reproducing device when in properposition for the removal of the disk.

1?). In a telegraphone, a recording magnet having a removable core andpole piece, a frame in which said magnet is mounted, and means forreversing the normal position of the magnet to facilitate the removaland replacing of the core and pole piece.

le. In a telegraphone, the combination of a` record medium in the formof a disk, two electromagnets cooperating with said disk, a frame inwhich said magnets are mounted in a line with each other substantiallycoincident with the direction of rotation of the disk, and means wherebythe direct-ion of the essere line connecting the pole pieces of themagnets can be shifted, substantially as described.

l. In a telegraphone, the combination of a record medium in the form ofa disk, a pair of magnets mounted in a single frame and adaptel tocooperate with said disk, a carriage in which the magnet frame issupported, and means for adjusting the magnetJ frame and carriage so tochange the position of the magnets with respect to the disk in twodirections.

16. In a telegraphone, a recording or reproducing magnet having aremovable core in combination with a removable plate normally restingagainst the rear end of the core to prevent its removal.

17. En a telegraphone, a pair of magnets mounted in a single frame, eachmagnet having a removable core, and a spring plate pivoted at the rearof said magnets and normally preventing the removal of the cores, asdescribed.

18. In a telegraphone, a frame, two electromagnets lmounted therein, anda plate to which said frame is attached and on which it. is supported,means for adjusting said frame in a` rotary direction upon said plate,and a carriage in which said plate is mounted.

19. In a talkingmachine, a carriage for the recording or reproducingdevice, a bed plate along which said carriage moves in parallelbearings, said bearings each comprising a hallway or groove, one bearingcontaining a single ball and the other' two balls and one of the.grooves being adjustable in width for the purpose set forth.

20. In a telegraphone, the combination of a bed plate or base, acarriage movable thereon, telegraphone magnets carried by said carriage,and electrical conductors eX- tendingl from said magnets through hollowportions of the carriage and thence through an opening in the base orbed plate in which the conductors have free movement during the traverseof the carriage.

21. In a talking` machine, the combination of a record medium in thevform of a disk, a rotating spindle upon which the same is carried, amotor for driving said spindle, a'

clutch for connecting the motor to the spindle, a brake for the rotatingspindle, and means for automatically opening the clutch and applying thebrake when the recording or reproducing devices have finished theirtraverse in one direction. v

In a talking` machine, the combination of a record medium in the form ofa disk, a carriage carrying recording or reproducing devices adapted tocooperate with said disk, a rotating spindle carrying said disk, adriving motor, a clutch, a brake, a spring, means whereby the finalmovement of the carriage will store power in said spring and llO thenrelease the same, and means whereby the spring will successively actuatethe clutch and brake.

23. ln a talking machine, the combination of a record support, and means:tor retaining a record disk upon said support comprising a knob overwhich the opening' at the center ot the disk can be passed, a pluralityot arms adapted to be housed within the diameter of the knob, and meansJor extending said arms to overlie the disk.

24. In a talking machine, the coi/nbination of a record medium in theform of a disk, a spindle on which the same is carried, and means forretaining' the disk upon the spindle comprising a knob over which theopening` at the center of the disk can be passed, a plurality ot' springarms adapted to be housed within the diameter ot the knob, and means forextending said arms to overlie the disk.

25. ln a talking machine, the combination ot a record medium in thetorni oit a disk having an opening' at its center, a spindle on whichsaid disk is carried, and means tor holding` the disk on the spindlecomprising aknob adapted to pass through said opening, a plurality otarms pivoted within the diameter of the knob, and means whereby therotation ot' the knob will cause said arms to be thrown outward tooverreach the disk or withdrawn to clear the opening in the disk.

ln a talking,` machine, the combination of a record medium in the formof a disk, and provided with a central opening, a spindle upon whichsaid disk is mounted, and means for holding` the disk upon the spindlecomprising' a knob adapted to pass through the opening,y in the disk, agear wheel mounted to turn with the knob and a plurality ot pivoted armseach having' gear segments in mesh with said gear wheel and adapted tobe thrown outward and inward with respect to the axis ot' the disk bythe rotation of the knob.

Q7. In a talking, machine, the combination of a record medium, acarriage carrying a spring` pressed frame, a recording or reproducingdevice carried by said frame, and a foot or support adapted to rest uponthe' surface of the record medium.

2S. 1n a talking` machine, the combination of a record medium, a spring'pressed frame, a record or reproducing device, and a toot or supportwhose bearing surface is a -iewel adapted to rest upon the surface ofthe record medium.

29. In a telegraphone, the combination with a telegraphone magnet havingan iron core adapted to bear upon the record me` dium, said core being`itted with a jewel or other wear resisting material in the torni of acollar, a cavity being formed between the extremity of the core and theadjacent portion of the refractive collar.

30. In a talking machine, a traveling,` carriage comprising a body inthe form of a trame-adapted to inclose the spindle of the recordsupport, and an inwardly extending arm adapted to carry the reproduccror recorder at or near its extremity.

31. ln a telegraphone, a magnet supporting' block 3Q having longitudinalgrooves 156 for receiving' the flexible supply wires ot the magnets,said block being carried by a horizontal pivot transverse to saidgrooves.

ln a telegraphone, a traveling' carriage having a spring pressed rockshat't 116 journaled therein, and a handle 11T and "feed nut rigid withsaid rock shaft.

83. ln ay telegraplionc, the combination of traveling carriage, a springpressed trame carried thereby, and a magnet pivoted to said trame, saidmagnet being angel-arly adjustable about to an axis perpendicular to itspivotal axis.

3l. ln a telegraphone, the combination ot a body and the -verticallyadjustable rod 172: adapted to receive and sustain the recorder orreproducer in one oi' the extreme positions of the traveling' carriage.

ln a telegraphone, a traveling car` riage in the form of a rectangularframe, one of the sides ot' said frame being provided with a groove 205i'or receiving' the magnet supply wires.

3G. ln a talking machine, the combination ct' a record support and meanstor retaining a record disk upon said support comprising a handle overwhich the center openingl of the disk can be passed, and one or morearms movable by said handle from a position bounded by said opening'into a position overlying the disk.

37. In a. talking machine, the combination of a record support and meanstor retaining a record disk having' a central opening` upon said supportcomprising; one or more arms movable from a position bounded by saidopening into a. position overlying the disk.

38. ln a talking machine, thc combination of a record medium, a carriagecarrying a spring' pressed frame, a recording or reproducing devicecarried by said trame, and a toot or support and pad adapted to resiupon the surface of the record medium.

In witness whereof, l subscribe my signature, in the presence ot twowitnesses.

FREDERIC SCHEFER.

Witnesses:

WVM. D. Cocina, HARvE R. STUART.

horizontal.

